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A024302
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Expansion of sin(sinh(x))*x/2.
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0
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0, 1, 0, -24, -224, 320, 76032, 2165632, 23343104, -1474043904, -127160524800, -5452094095360, -48051108446208, 17669269569961984, 2144050100688125952, 144303119119098839040, 2287457902532063395840
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OFFSET
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0,4
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LINKS
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MATHEMATICA
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With[{nn=40}, Take[CoefficientList[Series[Sin[Sinh[x]] x/2, {x, 0, nn}], x] Range[0, nn]!, {1, -1, 2}]] (* Harvey P. Dale, Sep 06 2019 *)
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CROSSREFS
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KEYWORD
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sign
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AUTHOR
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EXTENSIONS
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Extended with signs Mar 1997
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STATUS
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approved
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